From 42d6d0e5013918382acabe6ded4c50886cd65667 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= <marcandre.lureau@redhat.com>
Date: Wed, 13 May 2026 10:03:37 +0400
Subject: [PATCH] ui/vt100: add vt100_fini() check
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vt100_fini() is called unconditonally from qemu_text_console_finalize(),
but it may not have been vt100_init()/opened: fix the crash in that case.

Fixes: 8fa294482eb ("ui/console-vc: move VT100 state machine ...")
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 ui/vt100.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ui/vt100.c b/ui/vt100.c
index f8140cfa85..6e64845b6c 100644
--- a/ui/vt100.c
+++ b/ui/vt100.c
@@ -978,6 +978,9 @@ void vt100_init(QemuVT100 *vt,
 
 void vt100_fini(QemuVT100 *vt)
 {
+    if (!QTAILQ_IN_USE(vt, list)) {
+        return;
+    }
     QTAILQ_REMOVE(&vt100s, vt, list);
     fifo8_destroy(&vt->out_fifo);
     g_free(vt->cells);